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Cu-Ce電子相互作用の変調によるCO2水素化メタノール合成の促進：反応性ヒドロキシル媒介HCO3*生成とHCOO*経路の強化

Boosting methanol synthesis in CO2 hydrogenation via modulating Cu Ce electronic interactions: Reactive hydroxyl-mediated HCO3* generation and enhanced HCOO* pathway (原題)

Peixiang Shi, Liqiang Deng, Ziyu Zhang, Qian Jia, Yanchun Li, Yongzhen Wang, Lei Li, Congming Li

Science Data Bankデータセット2026-08-31#CCUSOrigin: CN対象セクター: chemical
DOI: 10.57760/sciencedb.010ds
原典: https://doi.org/10.57760/sciencedb.010ds

🤖 gxceed AI 要約

日本語

Cu-Ce電子相互作用を調整し、CO2水素化によるメタノール合成を高効率化。5%CeドープでCu+種と酸素空孔を増やし、反応性OH*を生成。HCO3*中間体を経由するギ酸経路でメタノール選択性45.5%、STY 171.2 mg/gcat./hを達成。320時間の安定性も確認。

English

This study modulates Cu-Ce electronic interactions to enhance CO2 hydrogenation to methanol. Optimal Ce doping (5%) increases Cu+ species and oxygen vacancies, generating reactive hydroxyl groups that mediate HCO3* formation, leading to a formate pathway. The catalyst achieves 45.5% methanol selectivity, STY of 171.2 mg/gcat./h, and 320 h stability.

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

日本のGX政策では、CO2を資源として活用するカーボンリサイクル技術が注目されており、本研究成果はメタノール合成の効率向上に寄与する可能性がある。ただし、実用化にはさらなるスケールアップと経済性評価が必要。

In the global GX context

This research contributes to global efforts in carbon capture and utilization (CCU), particularly for producing methanol as a chemical feedstock or fuel. It provides mechanistic insights that could inform catalyst design for more efficient CO2 conversion, relevant to transition finance and decarbonization pathways.

👥 読者別の含意

🔬研究者:Provides mechanistic understanding of Cu-Ce interactions in CO2 hydrogenation, useful for catalyst design.

🏢実務担当者:Potentially relevant for chemical companies exploring CCU routes, but far from commercial application.

🏛政策担当者:Supports the viability of CCU technologies, but not directly actionable for policy.

📄 Abstract（原文）

Multi-component copper-based catalysts hold great promise for CO2 hydrogenation to methanol, yet the intricatecorrelation between catalyst structural features, the generation and transformation mechanism of key intermediates,and catalytic activity remains elusive. Herein, the intensity of Cu–Ce electronic interactions wasmodulated to synergistically optimize the distribution of active Cu species, oxygen vacancies (Oᵥ) and reactivesurface hydroxyl groups (OH*). Comprehensive characterizations (H2-TPR, Raman, and XPS) confirmed that anoptimal Cu–Ce electronic coupling, achieved via 5% Ce doping, promotes the formation of Ce3+ (Ce3+/(Ce3++Ce4+) = 43.6%), enriches Cu+ species (Cu+/(Cu0 + Cu+) = 61.4%), and increases the Oᵥ density (OII/(OII+ OI) = 76%) in the reduced catalyst. These structural and electronic optimizations synergistically enhance CO2activation and H2 dissociation, notably inducing the formation of reactive OH*. Mechanistic studies reveal thatthe reactive OH* directly mediates the reaction with adsorbed CO2 to generate HCO3* intermediates, whichfurther hydrogenate to HCOO* and *OCH3 via the formate pathway. Consequently, the optimized CZCe-5%catalyst achieves the superior methanol selectivity of 45.5%, a space-time yield (STYCH3OH) of 171.2 mg/gcat./hand excellent stability over 320 h of continuous reaction. This work reveals the reactive hydroxyl-mediatedHCO3* generation mechanism in CO2 hydrogenation and establishes a clear structure-mechanism-activity relationshipfor rational catalyst design.

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